I have a ford 8.8 with the factory "locker" out of what appears to be a mustang. It looks like early 2000 model year...it has the extra "tops" that would work with a 4-link. I have no clue how many miles are on the axle. If anybody is interested I am more than willing to put it on a pallet for shipping or doing some other method. I have no clue how much shipping would be...all I know is that is it freakin' heavy. Located in Lakeside, AZ (near Show Low) and $100 or best offer. Buyer pays shipping but I am more than willing to work with you! I just need it out of the garage! The locker seems to work...you turn 1 side and the other goes the exact same direction (not backwards).